Jean wagner



(No Model.)

J. WAGNER.

GRATE BAR.

WITNESSES:

UNITED STATES PATENT JEAN IVAGNER, OF PARIS, FRANCE.

G RATE-BAR.

SPECIFICATION forming part of Letters Patent No. 561 ,632, dated June 9, 1896. Application filed May, 15,1894 Serial No. 511,277. (NomodeL) Patented in France March 28, 1894, No. 287,366; in Belgium March 29,

1894, No. 109,246; in $witzerland April 16, 1894,11'0. 8,391; in England April 18, 1894, No, 7,702; in

Germany April19,1894,llo. 80,221; in Italy April 30. 1894,1l0- 36,276; in Spain July 9, 1894,1 lo.18,041,aml in Austrim July 16, 1894,11'0. 3,258-

To all whom it may concern.-

Be it known that I, JEAN \VAGNER, a citizen of the French Republic, residing at Paris, France, have invented certain new and useful Improvements in Grate-Bars, (for which I have obtained patents in France, No. 237,366, dated March 28, 1894; in Belgium, No. 109,246, dated March 29, 1894; in Switzerland, No. 8,391, dated April 16, 1894; in Great Britain, No. 7,702, dated April 18, 1894; in Germany, No. 80,221, dated April 19, 1894; in Italy, No. 36,276, dated April 30, 1894; in Spain, No. 16,041, dated July 9, 1894, and in Austria, No.

3,258, dated July 18, 1894,) of which the following is a specification.

The object of my invention is to provide a grate in which air can freely circulate, so that it arrives at the fire in a warmer state, the bars at the same time being relatively coo] by reason-of their structure.

This grate-bar can be applied to all grates without the necessity of any change, and allows of the employment of various kinds of combustibles by use of small coal, coal-dust,

coke, charcoal, sawdust, or any other waste; and it consists of certain features of construction to beherein after fully described and then claimed.

In the accompanying drawings, Figure 1 represents a side elevation of one end of a grate-bar embodying my improvements. Fig. 2 is a plan view of portions of two bars. Fig. 3 shows a section on the line 3 S of Fig. 2. Fig. 4 is a similar section of a modification. Fig. 5 represents a perspective view of two members of which the grate-bar is composed. Fig. 6 is a detail view of the rocking mechanism. for the grate-bars.

Similar letters of reference indicate correspondin g parts.

My improved grate-bar is composed of the two members B B. Each of these members is formed of a cast-iron plate 0, the height of which is about eight-tenths of the height of the whole bar, and on one face of the same, at equal distances apart, are cast the inverted triangular pyramids D, the opposite faces of the same being either plain, as shown in Fi 3, or channeled, as in Fig. 4, the channels Z the pyramids D of the one register with the intervals E formed by the pyramids D of the other, while the pyramids D register with the intervals E of member B.

Thedimensions of the diii'erent members B and B are such that when once united so as to form one grate-bar they are not able to touch at any single point except where connected at the ends. The triangular abutments F at the sides of the ends of the members prevent all lateral movement of the same, and consequently prevent the members B acting in contact with the members 13. The upper parts of the grate-bars are thus formed by the bases of the pyramids D and D,which are separated from each other by equal and regular spaces G. To maintain the regularity of these spaces, it is only necessary to prevent any longitudinal displacement of the members B and B, and this I attain by making certain parts of the base of one of the pyra mids of the member B of such dimensions that it exactly fills out the interval between the two neighboring pyramids of the member B.

As can be seen, each grate-bar of my system is formed of two members which register one with the other, but without touching each other. The two members have thus between them, toward the lower part, a more or less greater space, by which the air is permitted to penetrate into the interior of the bar and circulate between the different pyramids of said bar. The air is thus thoroughly separated and distributed over the whole surface of the grate-bars by the spaces G between the bases of said pyramids.

The volume of air reaching the combustible material will be much greater with a grate composed of parts as above than in an ordinary grate. The space between the bars can naturally be much diminished-as, for in M stancmin an ordinarygrate the spaces between the bars beingten millimeters, a distance of three millimeters would be sufficient l urther,

mass of combustible material, and it reaches the fire warmer than would :be thecase Wlth an ordinary grate-bar.

My improved lirc bar has the further important advantage "that it can bc mechanic, ally 'aked or cleaned by the employment of a movement entirely suitable to this system .of gratebars.

If"anoscillatory movement be imparted to a grate-bar around its axis of support, one

- attains, besides an oscillatory movement, a

shearingmovement at its upper part. ofthe twotmembers of which the bar is composed rises or falls alternately against the other, the pyramids of one member sliding in the intervalsprovided by the pyramids of the cillatory movement toall thcbars of the grate a series of shearing movements is imparted to'the-npper partsof. the bars, and it isthis .lllOVG-Hlfil'lll which tends to clean the grate: I The grate will thus always be in proper order," thedelctcrions effects of the heat being less marked, and consequently the grates will be of longer duration. To impart the 0scillat ing movement to the bars, various means may be employed; but I prefer the following as being more simple and practical.

The ends I of either of the parts B B which go to form a fire-bar A are provided with knife-blade ed gcs and rest in notches or bearings 0, provided in the crossbar K. Below the grate and at about the middle thereof is a transverse bar L, the ends of which extend into the side walls of the fireplace. To facilitate a t0-and-fro longitudinal movement of the transverse bar L the ends of the same are not placed directly on the masonry, but slide in cast-iron boxes N, set in the holes M. The upper part of the transverse bar is pro vided at equal distances apart with teeth P of suitable fo1'm,which project either between the bars or between the two members 13. and B of the same bar. By imparting a to-andfro longitudinal motion to this bar L an oscillatory motion is produced in the grate-bars, the members of which consequently slide one upon the other alternately. This transverse movement of the bar L is obtained by means of an eccentric Q, keyed to the end of a shaft R, to which is imparted a rotatory mot-ion, either in the masonry.

The dimiir One .7

' Patenttion or thect-her; This shaft Riis supported from one of. the side walls by bearings S, fixed on theend'of the shaft, 'which passes through the box is mounted a suitable crank, by which the rotatory motion is produced a'lhe principal advantages of my improved system of grate-bars are, first, for the distance of three to four millimetersbetween the bars air is uniformly distributed over the whole mass of combustible material, permitting of economy in firing and'of-using npthe entire I material, however fine; second ,the grate-bars present a very large cooling-surface, theair arrives warmer to the combustible material,

and all adhesion of slag toythe surface'is,

m ent entirely adapted to the system of bars.

Having thus. described my invention, 1 claim asnewand desire to secure by Letters 1; A grate-bar composed of two plates, disposed parallelivitheach'other side by side and providcdon their; adjacent faces with tri angular inverted pyramids which form downwardly-e'xtending sideribs the pyramids of .7

one plate projecting into thespaces between the pyramids of the adjacent plate forming plates being provided with means for preventing lateral and longitudinal movement of the plates, and being straight on their outer faces whereby they are adapted to form straight channels between the bars when arranged in the grate.

2. A grate-bar composed of two plates disposed parallel with each other side by side and provided on their adjacent faces with triangular inverted pyramids which form downwardly-extending side ribs, the pyramids of one plate projecting into the spaces between the pyramids of the adjacent plate forming vertical air channels between them, said plates beingprovided with means for prevent ing lateral and longitudinal movement of the plates, and being straight on their outer faces whereby they are adapted to form straight channels between the bars when arranged in the grate, said plates having vertical grooves in their outer faces opposite said ribs.

In witness whereof I have hereunto affixed my signature, in presence of two witnesses, this 2d day of April, 1894:.

JEAN \VAGNER.

\Vitnesses:

MAURICE PALEWsKI, CLYDE SHROPSI-IIRE.

vcrticalair wchannels between them, said' 'I'co 

